Carbureting device.



E. J. BELL.

CARBURETING DEVICE.

APPLICATION FILED APR. 2\. 1913.

1 163.,U59. Pate itod Dec. 7, 1915.

2 SHEETS SHEET 1.

fig. 2

E. I. BELL.

CARBUREI'ING DEVICE.

APPLICATION FILED APR. 2I, m3

1.,l3fl59. Patented Dec. Y, 1915.

2 SHEETS-SHEET 2.

7% 55mg Ermasz J 3662. m

III/JIM (/0 W x B5 ERNEST J. BELL, :6 NEW RICHMOND, WISCONSIN.

fiARBUlEt'ETING DEVICE.

Specification of Letters Patent.

Patented Dec. 't, 1915.

Application filed. April 21, 1913.. Serial No. 762,500.

To all whom it may concern:

lie it known that I, EnNnsT J. BELL, a citizen of the United States, residing at New ii-lunoncl, in the county of St. Croix and in te of ft isco'nsin, have invented certain ne 1 and useful improvements in Carbureting Devices, of which the following is a specification.

My invention relates to carbureting devices for gas en ines and has for its object to provide a substitute for the carbureter ordinarily employed in connection with the gas engines of automobiles or other explosive engines.

The ordinary carbureter comprises means or dr-ili vering oil to some point or points -thin'the mixing chamber of the carbuperlnitting air to be drawn through chamber, the suction of the air or the vacuum created thereby causing the fuel oil to be drawn cut so that the same will. vaporize in the current of air. In this type of carbureter the-oil is-exposed atall times and there is frequentl a very considerable waste due to back pu saticns by which the charged gas is blown from the carbureter into the atmosphere.

l ft is the object of my invention to force the oil into a manifold or charging tube under air pressure from the nozzle of an atomizer so that the fuel oil' enters the current of air created by the engine in the term of finely divided atoms, which are thereafter instantly caused to vaporize by the inrushing of the current of air through the charging tube. 1

if further provide means 'of control whereby the stream of mixed air and vapor from the atomizer will be admitted to the charging tube only during the time when the intake valve is open.

I if further provide control for the atomizer apparatus such that the same may be opened for any desired period from a period such as to admit the smallest amount ofexplosive mixture which will cause an explosion up to the maximum capacity of the engine.

lfhe full objects and advantages of my invention will appear in connection with the detailed description thereof and are particularly pointed out in the claims. in the drawing illust'ating the application of my inv Hill in form,l"igure 1 is a diagrammatic view of an apparatus showing the application of my improved carbureting mechanism to a manifold de-' '6 is a diagrammatic plan view of the parts as shown in Fig. 1 employing the modified valve form shown in Fig. 5. trates the segment.

As illustrated, a charging tube 10 leading Fig. 7 illusto a manifold tube-11 or directly to an intake port, as desired, is open at the bottom and has extending within the same an atomizer nozzl 12, said nozzle being connected with a pipe 13. The pipe 13 communieates with an aperture 1a in the wall 15 of a cylinder 15-23 as shown in Figs. 1 and 2. Said cylinder comprises a fixedly mounted half-cylinder member 15 and a loosely mounted half-cylinder me her 23, and is provided with a smooth 0 lindrical bore. The base 16 of the standard 15 extends forwardly a requisite distance and has therein a square opening 17 in which is designed to slidea square stem 18 secured to the bottom of a cylindrical valve member 19 closed at top and bottom and provided along one side with alined elongated apertures 20 and 21. An upright 22 is secured to base 16. A complemental semi -cylindrical bearing member 23 rests at the lower end upon the base 16 and engages with its interior the wall of valve member 19, being continually forced against the same by a series of springs 24. Preferably the standard 15 and the movable bearing-piece 23 are out back, as indicated at 25 and 26, so that the valve member 19 when. the same is moved will Figs. 4 and 5 are sectional views of always have the upper and lower edges" thereof pass by said shoulders, thereby insuring uniform wear and an airtight joint. The valves 19 is provided at its upper end with a piece or lug 2'? which is held constantly in engagement with an eccentric or cam 28 by means of a helical spring 29 surrounding the square stem 18.

As clearly shown in Fig. 2, the aperture 20 is so formed that when the member 19 is at the upper limit of its travel no part of the aperture 20 will come opposite the aperture 1 1 leading to pipe 13, although the broken vapor or liquid dust.

aperture 20 lies in the vertical line in which said aperture 14 opens, so that when the member 19 is reciprocated in its bearings the aperture 20 may be brought opposite the aperture 14. The aperture 21, however, is positioned so that when the valve l9 is at either limit of its possible stroke said aperture 21 will come opposite an aperture 30 in alinement with aperture 14. A pipe 31 connects the aperture 30 with a tank 32 in which air is compressed by any well-known means, Connection being made through a pipe 33. It thus appears that the cavity 34 within valve member 19 is at all times in communication with the interior of the compressed air tank 32 and, therefore, will at all times be filled with air at the same pressure as the air in tank 32. Whenever valve 19 is moved so as to bring aperture 20 in line with aperture 14 the compressed air will be allowed to pass out through pipe 13 and to atomizer 12. An oil feed pipe 35 extends from oil feed tank 38 and enters air pipe13, as indicated at 37, the tank 38 having therein means for keeping the oil in the same at a fixed level therein, indicated at 36, which level will be carried through in the pipe 35 to a point below its junction with pipe 13, as indicated at 39. It is obvious that when the air is admitted to tube 13 under pressure it willcarry with it oil from tube 35 through atomizer pipe 12 and blow the same into the charging pipe 18 in the form of a finely The valve forms shown in Figs. 4 and 5 differ from that above described in that in place of a sliding valve member 19 there is provided a rocking valve 40 which oscillates about its axis. The valve 40 is mounted to oscillate in bearings formed of a fixed block 41 and a movable block 42, and has an axially extended shaft 43 on which is mounted a cam arm 44, held in engagement with the eccentric 28 bv means of a spring 45 engaging between said cam arm and a fixed part of, the machine. The valve 40 is provided with peripheral slot-like apertures 46 and 47, and the pipes 13 and 31 communicate with aper- .tures in the fixed casing 41 similar to apertures 14 and 30 in fixed casing 15. The peripheral openings 46 and 47 are positioned relative to these apertures so that when spring 45 holds the oscillating valve 40 at its maximum upper position no part of aperture 46 Will come opposite the aperture 14, but the aperture 47 will at all times open communication from the interior of oscillating valve 40 with air pipe 31.

Means are provided for sliding the member 19 or oscillating the valve 40 so as to open air pressure communication with pipe 13 at the moment when the intake valve is opened and to close the same when the intake valve closes, and to regulate the duration and extent of said opening as desired.

To effect this, the eccentric 28 is splined upon a shaft 48 which is driven by a gear 49 through intermediate gearing, not shown, at a. speed such as to rotate said shaft once for each operation of an intake valve. In a two-cycle engine this might be once in each revolution of the crank shaft; in a fourcylinder, four-cycle engine with a single intake. manifold this would be twice for each revolution of the crank shaft; while with a six-cylinder manifold the rotation of shaft 48 would be at a rate of speed three times that of the crank shaft. In any case, the rotation of shaft 48 will be at the rate of one complete revolution for each operation of an intake valve served by the charging manifold to which the carbureting mechanism is attached. As clearly shown in Figs. 2 and 4, the eccentric 28 has a cylindrical segment 50 having the elements thereof parallel with shaft 48 and a gradually increasing eccentric portion 51. Collars 52 and 53 on shaft 48 limit the sliding movement of eccentric 28 dn said shaft. When the eccentric is in contact with collar 53 the portion thereof which engages the bearing member 27 or the cam arm 44 will be circular, so that turning of the same in contact with said members will have no effect upon sliding valve 19 or oscillating valve 40. \Vhen the eccentric 28 is at the other extremity of its stroke and in contact with collar 52 the most extended eccentric portion 51 will engage members 27 or 44, and the largest extent and duration of opening of air pipe 13 to compress air will be effected. All possible variations .of such extent and duration of opening between zero and this maximum are effected by positioning the eccentric slide 28 intermediately as may be desired.

To operate the eccentric slide, a fork 54 has pins 55 engaging in a groove 56 formed in a collar or extension on the end of eccentric slide-28. The shank 57 of fork 54 is pivotally connected with a lever 58 pivoted at 59 to a fixed part of the frame. The lever 58 oscillates in a horizontal plane upon a guide 60, a keeper-strap 61 over said guide holding the lever 58 in position. A link 62 is pivotallv connected with lever 58 near its point of attachment 59, said link in turn being pivotally connected to an arm 63 on the lower end of a rock shaft 64 extendingthrough the centerof the stand 65 for the steering wheel in the well-known way. The shaft 64 has on the end thereof a spring crank handle 66 formed with a detent 67 engageable in notches 68 formed in a segment 69. At the end of said segment 69, which limits the throw of arm 66 so as to bring eccentric slide 28 into position rendering the valve inoperative, an extra deep notch 70 is provided with a projection 71. before the withinthe intake tube, a fuel oil supply,

moaned operator always throwing the valve into fully closing position when the engineis stopped, as otherwise the engine might stop in some position so that the compressed air valve would be open slightly, which would result in the loss of compressed air and of fuel.

The operation of my device will readily be understood. The air tank 32 may be kept stored with air at the desired pressure by well-known devices operated from the motor or the running gear of thefautomobile; in starting the engine when the detent 67 is taken over the high point 71 and into the first notch beyond, enough opening will be efifected to pipe 13 so that compressed air can be blown out and with it a charge of atom:

ized fuel oil within the charging tube 10. After the engine has been started the amount of admission may be regulated very nicely by the movement back or forth of they eccentric slide :28. The liquidwhich enters the charging tube 10 will always be very finely broken up and previously mixed with air so that when the same unites with the suction current caused by the engine, practically perfect vaporization will take place even when heavy oils such as kerosene are em ployed. It is practical also to provide heated plates or surfaces against which the fuel oil vapor may be blown where such surfaces are desirable, which would still further efi'ect complete satisfactory vaporization of the fuel oil. Under ordinary conditions, howeverd my improved carbureter mechanism renders possible'the use of such heavy oils as kerosene eliiciently and economically without the employment of any such heated plates or auxiliary devices. claim:

1. A carbureting device comprising an intake tube for an explosive engine, a tank containing, air under pressure, an atomizer means for conducting oil therefrom to the atomizer, an air plpe system forming a passageway between the tank and the atomizer, 'a valve 1n said system normally shutting 1 off said passageway, means. timed in relati'cihto the operating devices of the engine for operating said valve to open and close communia-tion between the tank and the atomizer, and means under the control of the operator to regulate the extent and duration of said opening and closing means.

2. A carbureting device comprising an intake tube for an explosive engine, a tank contaitiing air under pressure, an atomizer avitlrinaheintake tube, a fuel oil supply, means for conducting oil therefrom to the atomizer, a movable container provided with a'pair of apertures, a pipe extending from the air tank to one of said apertures and a pipe extending from the atomizer into proximity with the other aperture, means to move the container to cause the same to open and close communication between said pipes, and means under-the control of the operator to vary the extent of movement pf 'said. container and correspondingly vary the extent and duration of opening between the said pipes.

3. A car-bursting device comprising an in take tube foran explosive engine, a tank containing air under pressure, a vaporizer within the intaketube, a fuel oil supply, means for conducting oil therefrom to the atomizer, a closed slidable cylinder provided with a pair of alined elongated apertures, a pipe extending from the air tank to one of said apertures, a pipe extending from the vaporizer into proximity with the other aperture, and means to slide the cylinder, to

Y cause the same to open and close communication between the pipes.

4:. A carbureting device comprising an intake tube for an explosive engine, atank containing air under pressure, a vaporizer with in the intake tube, a fuel oil supply, means for conducting oil therefrom to theatomizer, a closed slidahle cylinderprovided with a pair of alined elongated apertures, a pipe extending from the air tank to one of said apertures, a pipe extending from the vaporizer into proximity with the other aperture,

and .a cam device to slide the cylinder to close communian elongated cam device having an eccentric int are

portion gradually increasing in extent of so:

'centricity to slide the cylinder to cause the same to open'and close communication be tween said pipes, and means under the control of the operator to slide the cam device upon the shaft to vary the extent of action -of the same upon the sliding cylinder and correspondingly vary the extent and duration of opening between the said pipes.

b. The combination, with an explosion-engi'ne cylinder intake open to atmosphere, of a valve in addition to the usual admission lllh and exhaust valves of an explosion-engine,

a ported guide for said valve, a compressed air reservoir separate and independent of the crank-case of the engine, a tube connecting said reservoir to one port in the valve guide, an air-tube leading from another port in said guide to a point within said intake and terminating in a nozzle, an oil Elm reservoir, a tube leading from the la-tter to valve permitting air to pass from the air a junction with said air-tube at 21v point he reservoir into said. air tube. 10 tween the valve-guide and the nozzle, said In testimony whereof I aflix my signajunction being outside of both the engine ture in presence of two Witnesses.

cylinder and the valve guide, and means ERNEST J. BELL. driven by the engine for regularly opening Witnesses:

s d Valve in time with charging strokes F. A. VVHITELEY,

oi the engine piston, the opening of said H. A. BOWMAN. 

